Share 2 TVs with 1 apple tv

You could use an HDCP complaint HDMI splitter to send the signal from the Apple TV box to two screens.

Apple TV →[HDMI]→ splitter →[HDMI]→ TV 1

↘︎[HDMI]→ TV 2

Depending on the distance, that might be challenging and needing more components to overcome that.

To be honest it would be wiser to just get another Apple TV box and connect it to your 2nd TV. You can buy them refurbished at the Refurbished Apple Store when they are in-stock for $109.00.

Refurbished Apple TV 4K 64GB (3rd Generation) Wi-Fi - Apple

Not possible, unfortunately.